如何使用目标c检测击键？ [英] How do i detect keystrokes using objective c?

问题描述

只是想知道，我如何去检测不同的键击，然后检测什么键已经按我试图使用这个
- （void）keyDown：（NSEvent *）event
，但似乎没有得到任何结果。我也有一个搜索，但没有找到任何东西。我猜我可能需要在界面构建器中设置一些东西来检测击键？
我还认为它与所选择的内容有关，如果它的一个文本字段有东西。

Just wondering, how I go about detecting different keystrokes, and then detecting what key has been pressed I tried using this, -(void)keyDown:(NSEvent *)event but didnt seem to get any results. I've also had a search around but didn't find anything. I'm guessing I may have to set up something in interface builder to detect keystrokes? I also think that it has something to do with what is selected, if its a text field something.

推荐答案

keyDown：方法只被调用某些视图，它的子视图我想。如果您需要应用程式的所有按键操作，请检查 NSEvent 类方法：

keyDown: method is called only for certain view and it's subviews I think. If you need all keystrokes for your app - check NSEvent class method:

+ (id)addLocalMonitorForEventsMatchingMask:(NSEventMask)mask 
                                   handler:(NSEvent* (^)(NSEvent*))block

$ b b

阅读Xcode文档。我猜你是雪豹。

Read upon in it Xcode documentation. I presume you're on snow leopard.

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